Adapter



. H. P. DONLE ADAPTER Fild Jam.V 19, 1920 @met 2 H923.,

Patented Oct. 2, 1923.

U IT

HAROLD POTTER DONLE, OF MERIDEN, CONNECTICUT, ASSIGNOR T0 THECONNECTICUT TELEPHONE & ELECTRIC CO., INC., OF MERIDEN, CONNECTICUT, ACORPORATION 0F CONNECTICUT.

ADAPTER.

Application led January 19, 1920. Serial No. 352,310.

To all whom it may concern:

Be it known that I, HAROLD POTTER DONLE, a citizen of the United Statesof America, residing at Meriden, Connecticut, have invented a new anduseful Adapter, of which the following is a specification.

My invention relates particularly to an ladapter for what' are commonlytermed wireless valves or tubes.

The main object is to provide a simple and inexpensive form of'deviceadapted to fit in to an ordinary'tube socket and to itself receive asmaller sized tube.

In its preferred 'form it consists of an insulating basewith a lockingring and carrying spring pressed plungers adapted to be engaged by theend terminals of a smaller tube.

Fig. 1 is a plan view of a device embodying the improvements of myinvention.

Fig. 2 is a side view of the same showing a -fragment of a tube in placein the adapter.

Fig. 3 is a lower end view.

Fig. L is an enlarged sectional view on the plane of the line 4 4 ofFig. 1, but omitting one of the plungers.

The body of the device 5 is-preferably formed of some suitable moldedcomposition into which the socket ring 6 is molded.

The base carries a plurality of plungers such as 7. In this case thereare four, each of which is movable longitudinally in a passage such as 8in the base. Each plunger has a head 9 on the inside of the base adaptedto be engaged by one of the end contacts of a tube, and a head 10 on itsouter'end adapted to engage a contact in a larger socket. A spring 11surrounds the shank of a plunger 7 between the head 9 andthe .bottom ofthe cavity in the base so as to hold the lunger yieldingly in theposition shown in ig. 4. The opposite end 12 of the plunger is smallerin diameter and carries the washer-like head 10 which abuts against ltheshoulder 13 on the shank of the plunger. The outer end of thereducedextension 12 is riveted `or spun over at 14 so as to hold the head 10securely in place.

The base and ring 6`are adapted to receive the end 15 of a tube whichhas on it a locking pin 16. The ring 6 has a bayonet slot 17 to recei\'ethe pin 16. The parts are so constructed and proportioned that when a.

tube is inserted as shown in Fig. 2, the contact of the end of the tubewith the upper end'of the`plunger 9, forces the plunger downward intothe position shown in Fig. 2. Each ofthe plungers thus effects ayielding pressure on the corresponding contact of the tube. rIhis springpressure tends to hold the tube in place with the pin 16 in the pocket18 in the inner end .of the bayonet slot 17 of the ring 6.

The insulating base or body 5 also has an extending pin or projection 19adapted to engage in a locking slot of a socket in the same manner asthe pin 16 engages in the bayonetslot 17 of the ring 6.

In forming the device, the ring 6 is lirst made and then placed in themold with suitable material which is moldedl to form the base 5 on theend of the ring 6. The passages 8 are preferably formed in the moldingprocess. The plungers 7 are afterwards inserted with the springs 11 andthen the washer-like heads 10 are secured in position.

I claim-z 1. In a device of the character described. an insulating base,spring pressed plungers having heads outside and inside of said base, apin projecting laterally from said base, a ring tixedly carried by saidbase with its opening in line with the inner end of said plungers, saidring having a bayonet slot with its inne-r end in radial alinement withthe pin carried 'by said base.

2.11m an adapter of the character dcscribed, a block of insulatingmaterial having a cavity therein forming a cup-shaped base, a metalliclocking sleeve embedded in the ymaterial of said block interiorly ofsaid cavitysaid cup-shaped base having a passage extending through thebottom thereof and into the cavity, a contact plunger slidable in saidpassage, and a spring for urging said contact plunger outwardly in saidcavity, said plunger having amcontact head on the end within said cavityand a contact head on the opposite end on the outside of said cup-shapedbase.

3. In an adapter, a cup-shaped block of insulating material forminga'base, a metallic bulb-receiving sleeve embedded in said cupshaped basebloclathe bulb-receiving portion of said sleeve being in substantialalignment with the interior of said cup-shaped base block and forming acontinuation thereof, said cup-shaped base block having a plurality ofpassages in and vextending through the bottom, contactplungers slid:

able in said passages, ieads on said plungers on the inside and n theoutside of said I cup-shaped base, and springs for urging spring pressedplungers having heads outside andinside of .said eng-shaped body member,a pin projecting atei-ally from said body inernber9 said bodyhaving abayonet slotJ With its inner end in radial alinement with the pincarried by said body member.,

v 5. lin an adapter of the character described, a body member having aeavity weones therein forming a clip-shaped base,y said cup-shaped basehaving a passage extending through the bottom thereof and into lsaidcavity, a contact plun er siidable in said passage; and a spring orurging said contact plunger outwardly in said cavity, said Contactplunger having a he on the end Within said cavity and ahead on theopposite end on the outside' of said cupshaped base, said cup-shapedbase having locking means for retaining a bulb therein, the bottom andat least a portion of the sides forming the cup-shaped base being formedof insulating material.l

Hanoi@ ro'r'rnn nonne.

